[INFO] cloning repository https://github.com/danielpclark/faster_path
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/danielpclark/faster_path" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanielpclark%2Ffaster_path", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanielpclark%2Ffaster_path'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 726c7f75de64ec11b75259dff50248b1fc28ef22
[INFO] documenting danielpclark/faster_path against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanielpclark%2Ffaster_path" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/danielpclark/faster_path on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/danielpclark/faster_path
[INFO] finished tweaking git repo https://github.com/danielpclark/faster_path
[INFO] tweaked toml for git repo https://github.com/danielpclark/faster_path written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/danielpclark/faster_path already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rutie v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9d6583a52b03ef2411e34a99217b54cf2f8ad6aa325f16b3cbb7009251da4484
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9d6583a52b03ef2411e34a99217b54cf2f8ad6aa325f16b3cbb7009251da4484", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d6583a52b03ef2411e34a99217b54cf2f8ad6aa325f16b3cbb7009251da4484", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d6583a52b03ef2411e34a99217b54cf2f8ad6aa325f16b3cbb7009251da4484", kill_on_drop: false }`
[INFO] [stdout] 9d6583a52b03ef2411e34a99217b54cf2f8ad6aa325f16b3cbb7009251da4484
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4bbbe69971f2f7a47be377b79d3762fc35e18a97f6a66c881bdb4fc1f9eb1911
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4bbbe69971f2f7a47be377b79d3762fc35e18a97f6a66c881bdb4fc1f9eb1911", kill_on_drop: false }`
[INFO] [stderr]    Compiling rutie v0.6.0
[INFO] [stderr] error: failed to run custom build command for `rutie v0.6.0`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/rutie-c9d5d7eda39cf80f/build-script-build` (exit code: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rustc-link-search=/usr/lib
[INFO] [stderr]   cargo:rustc-link-lib=ruby-2.7
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'create_dir_all fail: Os { code: 30, kind: Other, message: "Read-only file system" }', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rutie-0.6.0/build.rs:179:46
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x5654dae559e0 - std::backtrace_rs::backtrace::libunwind::trace::h9e3e6d9b3369e699
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/../../backtrace/src/backtrace/libunwind.rs:96
[INFO] [stderr]      1:     0x5654dae559e0 - std::backtrace_rs::backtrace::trace_unsynchronized::he58aba3ac08ed12a
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/../../backtrace/src/backtrace/mod.rs:66
[INFO] [stderr]      2:     0x5654dae559e0 - std::sys_common::backtrace::_print_fmt::hbbbd4c92d537cef4
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/sys_common/backtrace.rs:79
[INFO] [stderr]      3:     0x5654dae559e0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h80c2ae080004cc83
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/sys_common/backtrace.rs:58
[INFO] [stderr]      4:     0x5654dae7376c - core::fmt::write::h0c11e16fd03fe660
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/core/src/fmt/mod.rs:1082
[INFO] [stderr]      5:     0x5654dae52e47 - std::io::Write::write_fmt::h2e2072ff86131fcd
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/io/mod.rs:1514
[INFO] [stderr]      6:     0x5654dae57ab0 - std::sys_common::backtrace::_print::h165e6476adb4cb58
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/sys_common/backtrace.rs:61
[INFO] [stderr]      7:     0x5654dae57ab0 - std::sys_common::backtrace::print::hbbfa32a92cd1fc34
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/sys_common/backtrace.rs:48
[INFO] [stderr]      8:     0x5654dae57ab0 - std::panicking::default_hook::{{closure}}::h3a02067ca7f64068
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/panicking.rs:200
[INFO] [stderr]      9:     0x5654dae577fc - std::panicking::default_hook::ha3137d6f4e961fe2
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/panicking.rs:219
[INFO] [stderr]     10:     0x5654dae58113 - std::panicking::rust_panic_with_hook::he6505c3b9d82db8b
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/panicking.rs:569
[INFO] [stderr]     11:     0x5654dae57ce9 - std::panicking::begin_panic_handler::{{closure}}::h4aa640a9e8494520
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/panicking.rs:476
[INFO] [stderr]     12:     0x5654dae55e4c - std::sys_common::backtrace::__rust_end_short_backtrace::h85d2ae6a90dead9c
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/sys_common/backtrace.rs:153
[INFO] [stderr]     13:     0x5654dae57ca9 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/panicking.rs:475
[INFO] [stderr]     14:     0x5654dae72a91 - core::panicking::panic_fmt::hbf8b471a26c80149
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/core/src/panicking.rs:85
[INFO] [stderr]     15:     0x5654dae728b3 - core::option::expect_none_failed::hd08bf36cae411fff
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/core/src/option.rs:1221
[INFO] [stderr]     16:     0x5654dae3b7ac - core::result::Result<T,E>::expect::he90676205feffa52
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/core/src/result.rs:933
[INFO] [stderr]     17:     0x5654dae1e6e3 - build_script_build::ruby_lib_link_name::hd6cd091d0a8dea5d
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rutie-0.6.0/build.rs:179
[INFO] [stderr]     18:     0x5654dae1ed61 - build_script_build::dynamic_linker_args::h1c7f38bcade2dc25
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rutie-0.6.0/build.rs:208
[INFO] [stderr]     19:     0x5654dae1e242 - build_script_build::use_dylib::h180760e3f70a0262
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rutie-0.6.0/build.rs:97
[INFO] [stderr]     20:     0x5654dae2105f - build_script_build::main::h1955d30f176abecf
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rutie-0.6.0/build.rs:359
[INFO] [stderr]     21:     0x5654dae23aab - core::ops::function::FnOnce::call_once::h51d31816abcefa4b
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/core/src/ops/function.rs:227
[INFO] [stderr]     22:     0x5654dae3424e - std::sys_common::backtrace::__rust_begin_short_backtrace::hf006bdbdf1439737
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/sys_common/backtrace.rs:137
[INFO] [stderr]     23:     0x5654dae31d61 - std::rt::lang_start::{{closure}}::h386ff9563eee6e39
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/rt.rs:66
[INFO] [stderr]     24:     0x5654dae58511 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hdabbbe0d2c6ccde8
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/core/src/ops/function.rs:259
[INFO] [stderr]     25:     0x5654dae58511 - std::panicking::try::do_call::h0c8c1cd19bf9d385
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/panicking.rs:373
[INFO] [stderr]     26:     0x5654dae58511 - std::panicking::try::h357e78da017bc4a8
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/panicking.rs:337
[INFO] [stderr]     27:     0x5654dae58511 - std::panic::catch_unwind::h72f31b36adf61841
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/panic.rs:379
[INFO] [stderr]     28:     0x5654dae58511 - std::rt::lang_start_internal::h634502e153211333
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/rt.rs:51
[INFO] [stderr]     29:     0x5654dae31d37 - std::rt::lang_start::h015cd8290845f383
[INFO] [stderr]                                  at /rustc/84b047bf64dfcfa12867781e9c23dfa4f2e6082c/library/std/src/rt.rs:65
[INFO] [stderr]     30:     0x5654dae2122a - main
[INFO] [stderr]     31:     0x7f4e49daf0b3 - __libc_start_main
[INFO] [stderr]     32:     0x5654dae160be - _start
[INFO] [stderr]     33:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "4bbbe69971f2f7a47be377b79d3762fc35e18a97f6a66c881bdb4fc1f9eb1911", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bbbe69971f2f7a47be377b79d3762fc35e18a97f6a66c881bdb4fc1f9eb1911", kill_on_drop: false }`
[INFO] [stdout] 4bbbe69971f2f7a47be377b79d3762fc35e18a97f6a66c881bdb4fc1f9eb1911